Electrode assembly and electrochemical device including the same

摘要

Disclosed is a technology for preventing electrodes in a secondary battery from being short-circuited with each other. An electrode assembly includes a cathode and anode of which a cathode collector and anode collector are coated with a cathode active material and anode active material, respectively, and a separator disposed between the cathode and the anode. An insulation layer is disposed on a tab part of the cathode collector constituting the cathode. Thus, an insulation layer may be disposed on an end (a tab part) of the cathode collector that is used as a tab of the cathode electrode in the structure of the electrode assembly to prevent the cathode from being physically short-circuited with the anode in the sequentially stacked structure of cathode/separator/anode.

主权项

1. An electrode assembly comprising:
a cathode and anode of which a cathode collector and anode collector are coated with a cathode active material and anode active material, respectively; a separator disposed between the cathode and the anode; and an insulation layer that is attached to a tab part of the cathode collector and to an end of the cathode active material, wherein the separator adheres to both the insulation layer and the end of the cathode active material.